0
-1
Section::::Abstract.
Number
21690
0
-1
Section::::Abstract.
Roman numerals
25657
Zero
-1
Section::::History.:First use of numbers.

Number
21690
Zero
-1
Section::::Description.:A "base 10" system.

Roman numerals
25657
zero
-1
Section::::History.:Numerals.

Number
21690
zero
-1
Section::::Description.:A "base 10" system.

Roman numerals
25657